verify

A verification skill for proving that an implementation works in the current Git workspace by running configured checks and recording their results.

In plain words
What is it for?
Use it during verification to run required checks, inspect failures, and confirm that final evidence matches the current code.
Why use it?
It prevents completion claims based on stale results, missing exit codes, or checks run against a different workspace state.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/asimons81/hardproof/verify
Any agent
npx skills add asimons81/hardproof --skill verify
Clone the repo
git clone --depth 1 https://github.com/asimons81/hardproof

Made for: Claude Code, Codex.

Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 292 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00021 $0.00292
Opus 5 $0.00010 $0.00146
Sonnet 5 $0.00004 $0.00058
Haiku 4.5 $0.00002 $0.00029

Measured 2d ago against content hash 43435c527255, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verify scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

hardproof/skills/verify/SKILL.md · 35 lines

What it actually says

Prove the Workspace State

Purpose

Tie completion claims to explicit successful checks executed against the current Git workspace snapshot.

When to use

Use for the VERIFY stage selected by the active run context.

Inputs

Use configured verification checks, profile requirements, current review outcome, Git state, and existing evidence records.

Procedure

  1. Inspect which required checks are configured and missing.
  2. Invoke hardproof_verify; do not substitute an unrecorded terminal run.
  3. Treat timeouts, malformed results, unknown exit status, or workspace changes during execution as non-passing.
  4. Inspect stored redacted output and address failures in IMPLEMENT.
  5. Rerun checks after every code change that makes evidence stale.

Required records

Quick and Standard require at least one fresh passing check; Critical requires at least two. Evidence must include an explicit zero exit code and matching workspace identity.

Exit criteria

All profile-required evidence is fresh, passing, and attributable to the final workspace state.

Failure modes

Never infer success from reassuring output, stale evidence, a missing exit code, or a prior commit. Return to IMPLEMENT for fixes and REVIEW when the diff changes materially.

Verification

Use hardproof_report to inspect evidence freshness, then call hardproof_transition for DELIVER.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 35 lines · 21 tokens per session scan A 43435c527255

Subscribe to this mod's changes

verify is a skill published in the GitHub repository asimons81/hardproof (5 stars, last pushed 4d ago), licensed Apache-2.0. It adds 21 tokens to every session and 292 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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